Shoulder kissing is a tradition that seems to be practiced as a greeting in, among other places, Saudi Arabia and Iran.
The Guardian has an article about one instance:
Iran's supreme leader, Ayatollah Ali Khamenei, was supposed to be endorsing Mahmoud Ahmadinejad for his second term as the president of Iran, but his awkward body language at today's ...
Since this is a modern piece of jewelry, it's going to be hard to give any answer other than "the whim of the artist". However, the interwoven animal motifs make me think this is inspired by Viking art.
My modern eyes see the animal heads as canine, but they most resemble dragon heads appearing in this article.
Here is detail from the prow of a Viking ...
Found the answer in the book Xenophon's Cyropaedia: Style, Genre, and Literary Technique, by Professor Deborah Levine Gera:
The gods Cyrus sacrifices to are all Greek ones, although Xenophon may
have had their Persian counterparts in mind: Zeus is actually meant to
be Ahura Mazda, Hestia is the god of the hearth-fire, Helios is
Judging from the context Ohrmazd knows his creatures can be corrupted and that in this way he tricks the evil spirit into accepting a proposed time for their final fight (making sure they are not fighting constantly). Ohrmazd, using his omniscience knew the end result would result in the evil spirit being disabled.
And the evil spirit shouted thus: 'I ...